Rates, Ratios, Percents, and Simple Interest

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you calculate a percent?

Back

To calculate a percent, divide the part by the whole and then multiply by 100. For example, if 25 out of 100 students passed, the percent is (25/100) * 100 = 25%.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

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CCSS.6.RP.A.2

CCSS.6.RP.A.1

Front

How do you find the total amount of simple interest earned?

Back

Simple interest can be calculated using the formula: Interest = Principal x Rate x Time.

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CCSS.7.RP.A.3

Front

If a recipe requires 2 cups of sugar for 5 servings, how much sugar is needed for 15 servings?

Back

6 cups.

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CCSS.6.RP.A.3B

Front

If a class is 55% girls and has 20 girls, how many students are in the class?

Back

36 students.

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CCSS.6.RP.A.3C

Front

Alan can bake 66 cupcakes in 3 hours. What is the unit rate of cupcakes per hour?

Back

22 cupcakes per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

It snowed 14 inches in 5 hours. How many inches did it snow every hour?

Back

2.8 inches per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What percent is shaded yellow if 1/4 of a shape is colored?

Back

25%.

Front

What is the formula for calculating percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) x 100.

Tags

CCSS.6.RP.A.3C